Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Installation Procedure
2008 Pontiac Grand Prix BaseSECTION Installation Procedure
WARNING: This page is about a different car, the 2007 Buick LaCrosse and 2007 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
- Install the insulator pads to the fuel tank.
- Install the EVAP canister (2) to the fuel tank (1).
- Do not attempt to straighten kinked nylon pipes. Replace any kinked nylon pipes in order to prevent damage to the vehicle.
- Do not attempt to repair sections of nylon pipes. Replace damaged nylon pipes.
- Replace the vapor pipes with original equipment or parts that meet GM specifications.
- Replace the vapor hoses with original equipment or parts meeting GM specifications. Use only reinforced fuel-resistant hose identified with the word Fluoroelastomer or GM 6163M on the hose.
- Install and connect the fuel feed (6), the fuel return (7), and the EVAP pipe (5) assemblies and the insulator clips to the fuel tank (1) as noted during removal. Refer to Plastic Collar Quick Connect Fitting Service .
- Install the fuel tank to a suitable jack.
- Raise the fuel tank (1) to the original position.
- Install the fuel tank strap bolts (2).
Tighten: Tighten the bolts to 48 N.m (35 lb ft).
- Remove the jack from the fuel tank.
- Position the fuel tank shield (3) to the fuel tank (1).
- Install the push pins (2).
- Install the two parts of the EVAP fresh air hose at the splice.
- Raise the exhaust system to the original position.
- Install the exhaust system to the exhaust pipe hangers.
- Connect the fuel feed (4), the fuel return (2) and the evaporative emission (EVAP) (3) pipes at the fuel filter area. Refer to Plastic Collar Quick Connect Fitting Service .
- Install the fuel tank filler hose to the fuel tank.
- Fully seat the filler hose (4) on the fuel tank port (2).
- Ensure that the clamp (1) is properly located on the tank port between the bead (5) and the tank (3).
Tighten: Tighten the hose clamp to 2.5 N.m (22 lb in).
- Lower the vehicle.
- Add fuel and install the fuel fill cap.
- Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (L26) or Battery Negative Cable Disconnection and Connection (LY7) in Engine Electrical.
- Inspect the fuel system for leaks by performing the following steps:
- Turn ON the ignition for 2 seconds.
- Turn OFF the ignition for 10 seconds.
- Turn ON the ignition.
- Inspect for fuel leaks.
- Install fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 3.8L.
NOTE:
NOTE:
Refer to Fastener Notice
.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.